Where in the electrical system is voltage typically stepped up?

Voltage is typically stepped up at generating facilities, which are designed to transform the voltage produced by generators into higher levels for efficient long-distance transmission. When electricity is generated, it is usually at a lower voltage suitable for the initial stage of power production. To reduce the energy losses that occur over long distances, the voltage is increased at the generating facility using step-up transformers.

This process is critical in ensuring that power can travel efficiently through transmission lines, minimizing resistive losses. Once the high-voltage electricity reaches substations closer to the end-users, it can then be stepped down to lower voltages suitable for distribution.

In contrast, substations primarily focus on voltage transformation for distribution rather than initial voltage increase. Power plants are often confused with generating facilities; however, terminology can differ depending on the context. Distribution centers handle the lower-voltage electricity already stepped down and do not typically change voltage levels from generation to transmission.